报告题目：Sustainable Activation of SO2 Using Organic Hydride Donors through SO2 Coupled Electron Transfer
报 告 人：Raja Angamuthu教授（印度理工大学）
Raja Angamuthu received his BSc and MSc from Bharathidasan University (Tamilnadu, India) and PhD from Leiden University, The Netherlands (2009). In 2012 he was appointed as an Associate Professor and then as full Professor in 2018 at the Department of Chemistry, Indian Institute of Technology Kanpur. Among the awards and honors he received, he nominated by Leiden Institute of Chemistry for the “Scientist of the year 2009” award from Faculty of Science of Leiden University and won Young Scientist Research Award from BRNS, Department of Atomic Energy, India, in 2013. He has published many papers in international journals, including Science, Green Chem., Chem. Asian. J., ACS Sustainable Chem. Eng.
Technologies to sequester SO2 from the point of emission and to convert them into value added products are gaining much attention. We have employed benzothiazolines and their coordination complexes of Zn(II) and Cd(II) ions and benzimidazolines in the sustainable activation of SO2. Benzothiazolines and benzimidazolines act as organic hydride donors to activate SO2 into H2SO4 at ambient conditions with the assistance of aerial oxygen by leaving useful benzothiazoles and benzimidazoles, respectively. The complexation of benzothiazolines was used as a strategy to prevent the spontaneous aerial oxidation into benzothiazoles; the complexes could be stored for prolonged periods. We have shown that the binding of SO2 on the electron rich center in benzothiazoline is the first step in the activation of SO2 by isolating the intermediate Bunte salt. In addition to this we have developed new methods to obtain Ni(II) hydrides through solid state reactions; these nickel hydrides could be used in a number of reactions including CO2 and SO2 activation.